Veritas Storage Foundation Intelligent Storage Provisioning 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

Six columns are created by preference. If this is not possible, ISP attempts to
create fewer columns down to a minimum of two.
log
The log rule describes a volume’s logs. The argument of the rule specifies how
many mirrors the log should have. Compound rules can include storage selection
rules, stripe rules, and define the log type.
The following log types may be defined:
Version 20 data change object (DCO) that can be used for both DRL
and FastResync.
dco
RAID-5 log.raid5
The following examples demonstrate the application of the log rule:
■ The following example creates a striped RAID-5 log with 4 columns, and a DCO
log, each of which are confined to LUNs from a single (but possibly separate)
enclosure:
parity true
log 1{
type raid5
confineto "Enclosure"
stripe 4
}
log 1{
type dco
confineto "Enclosure"
}
■ The following example creates a mirrored new-style DCO log, with each plex
configured on a separate controller.
mirror 2
log 2{
type dco
separateby "Controller"
}
165Using capabilities, templates and rules
Compound rules